Title:
誘導同期電動機とそれを用いた密閉型電動圧縮機
Document Type and Number:
Japanese Patent JP2007527189
Kind Code:
A
Abstract:
A synchronous induction motor has a stator having a main winding and an auxiliary winding; a rotor having a yoke, a permanent magnet embedded in the yoke and a secondary conductor provided in the vicinity of periphery of the yoke; and a starter. The starter has a starting capacitor connected in series with the auxiliary winding of the synchronous induction motor, and a switching unit to open/close a circuit from the starting capacitor to the auxiliary winding. The switching unit closes the circuit from the starting capacitor to the auxiliary winding when the synchronous induction motor is at rest, and opens the circuit after the synchronous induction motor is started. The synchronous induction motor is highly efficient and easy to re-start with low power consumption. The electric hermetic compressor equipped with the synchronous induction motor can perform with the similar effects.
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Inventors:
Keizo Iida
Application Number:
JP2006518503A
Publication Date:
September 20, 2007
Filing Date:
April 19, 2004
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H02K21/46; F04B35/04; F04B39/00; H02K17/08; H02K17/26; H02K17/30; H02P1/44; H02K19/14
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano